INTRODUCTION OF ELECTROPHILES TO THE ALPHA-POSITION OF ALPHA,BETA-UNSATURATED ALDEHYDES AND KETONES BY SEQUENTIAL CONJUGATE AMINOSILYLATION-ALKYLATION-DEAMINATION .121. STUDIES ON ORGANOSILICON CHEMISTRY
M. Hojo et al., INTRODUCTION OF ELECTROPHILES TO THE ALPHA-POSITION OF ALPHA,BETA-UNSATURATED ALDEHYDES AND KETONES BY SEQUENTIAL CONJUGATE AMINOSILYLATION-ALKYLATION-DEAMINATION .121. STUDIES ON ORGANOSILICON CHEMISTRY, Chemistry Letters, (4), 1994, pp. 719-722
Silylamines add to alpha,beta-unsaturated aldehydes and ketones in 1,4
-addition mode to generate amino-substituted silyl enol ethers without
any catalysts. These easily isolable silyl enol ethers react with ace
tals and aldehydes in the presence of a Lewis acid to give alpha-alkox
yalkyl and alpha-hydroxyalkyl substituted alpha,beta-unsaturated carbo
nyl compounds, respectively, after deamination by treatment with silic
a gel.